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(parent: 3ded051) | patch
i2c: generic recovery: check SCL before SDA
authorClaudio Foellmi <claudio.foellmi@ergon.ch>
Thu, 5 Oct 2017 12:44:14 +0000 (14:44 +0200)
committerWolfram Sang <wsa@the-dreams.de>
Sat, 28 Oct 2017 20:56:50 +0000 (22:56 +0200)
commit1f35b8653687b9c08c8d58489c1b5cb9cf961c17
treef078d095f01fa9792a3ce8e8849cf5a1e70e0c4dtree | snapshot
parent3ded0512e96fcd654c45d8245f6d7ea2e435a8c9commit | diff
i2c: generic recovery: check SCL before SDA

Move the check for a stuck SCL before the check for a high SDA.
This prevent false positives in the specific case that SDA is fine
and SCL is stuck, which previously returned 0.

Also check SDA again after the loop, if we can.
Together, these changes should lead to a lot more failed
recoveries being caught and returning error codes.

Signed-off-by: Claudio Foellmi <claudio.foellmi@ergon.ch>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
drivers/i2c/i2c-core-base.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git